dum.dk
Last scanned: 2026-08-27 03:26:08  ·  991ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   74ms
NameserverIP addressesPTRASN / ISP
helium.ns.hetzner.de 193.47.99.5
2001:67c:192c::add:5		 helium.ns.hetzner.de
helium.ns.hetzner.de		 AS12337 noris network AG
AS12337 noris network AG
hydrogen.ns.hetzner.com 213.133.100.98
2a01:4f8:0:1::add:1098		 hydrogen.ns.hetzner.com
hydrogen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
oxygen.ns.hetzner.com 2a01:4f8:0:1::add:2992
88.198.229.192		 oxygen.ns.hetzner.com
oxygen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
🌍 A Records1 records   57ms
IPTTLPTRASNISP / OrgCIDRCountryCity
195.201.138.86 43200s mail.dum.dk AS24940 Hetzner Online GmbH 195.201.0.0/16 🇩🇪 Germany Nuremberg
📧 MX Records1 records   67ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s mail.dum.dk 195.201.138.86 mail.dum.dk AS24940 Hetzner Online GmbH
🔷 AAAA Records (IPv6)1 records   68ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a01:4f8:c2c:1de6::2 43200s mail6.dum.dk AS24940 Hetzner Online GmbH 2a01:4f8:0:0:0:0:0:0/31 🇩🇪 Germany —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   329ms
TXT Record
google-site-verification=gAjtCFaaAMPmNmycFYIAUhRqU4LOW8pciEyVxlRDe6k
v=spf1 mx -all
✉️ SPF
PolicyRecord (dum.dk)
-all (hard fail) v=spf1 mx -all
📨 DMARC
PolicyRecord (_dmarc.dum.dk)
p=quarantine v=DMARC1; p=quarantine; pct=100;
📬 MTA-STS
✗ No MTA-STS policy — SMTP TLS not enforced
📈 TLSRPT
✗ No TLSRPT record — no SMTP TLS failure reporting
📜 CAA Records
✗ No CAA records — any CA may issue certificates
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC108ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2026050201
Primary NS (MNAME)hydrogen.ns.hetzner.com
Responsible (RNAME)dns@hetzner.com
Refresh86400s
Retry10800s
Expire3600000s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
74ms
A
57ms
MX
67ms
AAAA
68ms
TXT
329ms
CAA
74ms
HTTPS
61ms
TLSA
280ms
SOA
0ms
MTA-STS
128ms
DNSSEC
108ms
SRV
114ms
Total
991ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 03:26:08 991ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-23 10:13:15 1247ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-21 05:34:03 734ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-20 16:15:58 1291ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 05:27:16 10214ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 05:21:32 1565ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 05:04:30 506ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 05:00:50 605ms 3 NS 1 A 1 MX 🔓 Insecure View
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